Gate-valve-reseating machine.



PATENTED MAR. 1,1904.-

F. L. SMITH.

GATE VALVE RBSEATING MACHINE.

APPLIO T'IO'N FILED APR. '13, 1903.

. L E D 0 M 0 N out in the claims.

UNITED STATES Patented March 1, 1904.

PATENT OFFICE.

FRANK L. SMITH, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO ALVA G. RIOKSEOKER, OF CHICAGO, ILLINOIS.

GATE-VALVE-RESEAII'IING MACHINE.

SPECIFICATION forming part of Letters Patent N0. 753,747, dated March 1, 1904.

Application filed April 13, 1903.

To all whom it may concern:

Be it known that I, FRANK L. SMITH, a citizen of the United States, residing at No. 5733 Union avenue, Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Gate-Valve-Reseating Machines, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved device for reseating gate-valves, particularly adapted to be mounted upon the valve-body while the same is in place on the pipe-line to which it pertains.

It consists in the features of construction set In the drawings, Figure 1 is an axial section through the operating-shaft of my improved machine and body of a valve on which it is mounted for the purpose of reseating the same. Fig. 2 is a section at the line 2 2 on Fig. 1. Fig. 3 is a section at the line 3 3 on Fig. 1. Fig. 4 is a detail section axial .with respect to the shafts, showing a modificationof the means for driving the operating-shaft adapted for varying the position of the operating-crailk. Fig. 5 is a side elevation of the pivoted bearing pertaining to the device shown in Fig. 4:. Fig. 6 is a detail section axial with respect to the cutter-head shaft, showing an accommodating joint between said cutter-head and shaft.

On the valve-body 1 whose seat 2 is to be dressed my improved machine is mounted and secured by means of the parallel bars 3 3, between which there is pivoted the collar 4, which is adapted to be secured to the barrel or trunk 5 in which the operating-shaftof the machine is mounted, the machine hereinafter described having been introduced-into the valve-body after the removal therefrom of the customary cap in which the valve is journaled, (said cap and valves not being shown in the drawings.) The parallel bars 3 3 are lodged across the upper mouth of the body on the flanges from which the cap'has been removed, and they are clamped rigidly to the valve-body by means of the slotted clampbars 6 6, through whose slots necessary bolts 7 may be inserted to enter such of the bolt Serial No. 152,345. (No model.)

holesin the valve-body flanges as may be in convenient position. The trunk 5 is adjusted vertically through the collar 4 to bring the cutter hereinafter described in proper relation to, the valve-seat to be dressed and is secured in such position by tightening the setscrew 7 For the purpose of forcing the cutters against the valve-seat as theirwork is two-partlink 9 to one of the clamps 6, which is provided with suitable lugs 10 10, between which the lower end of the link 9 is pivoted. The link 9 comprises .a turnbuckle or right and left threaded sleeve 11, connecting its two end portions, and by rotating this turnbuckle the link may be lengthened or shortened, and

thereby the trunk tilted over the fulcrum afforded by the pivotal connection of the sleeve 4 to the bars 3 3, and thus the cutter is advanced toward and withdrawn from the seat on which it is to operate- The trunk comprises at its lower part which enters into the valve-body a bearing-frame 12 for the cuttershaft l3,which is journaled transversely therein and has ,rigid with it a beveled gear 14,,

which rotates between the opposite sides of the frame in which the-shaft-bearings are obtained and is actuated by a beveled pinion 15 on the inner end of the operating-shaft 16, which extends up through the trunk, being j ournaled therein at the upper end of the frame 12 and also at the upper end of the sleeve or cylindrical portion of the trunk 12, which is provided with a bushing 17, forming an adjustable bearing, which is telescoped into the upper end of the sleeve 12 and held securely by clamping the sleeve, which is split at one side between the lugs 18.18, through which a clamping-bolt (not shown) takes to close up the sleeve at the split. The shaft 16 may be actuated by a crank attached at its upper end and rotating in a plane at right angles to said shaft; but for convenience of operating the device in positions where it may not be praccontact serrated, so that they may bebound ticable to rotate the shaft in the plane required by the construction shown in Fig. 1 I provide a crown-gear 20 at the upper end of the shaft 16,(see Fig. 4,) having its teeth rounded, so as to mesh with a similar crown-gear 21 at any angle, said crown-gear 21 being mounted in a bearing 22, which is pivotally connected to the bearing 17 of the shaft 16, the pivotal axis being in a line tangent to the pitch-circle of the gears, so that their mesh is notmaterially affected by the change of angle between-- the gears. The bearing 22 of the crown-gear 21 is pivoted to the bearing 18 of the shaft 16 by means of lugs 23 and 24 on saidbearings, respectively, said lugs having their faces in together by the pivot-bolt 25 and held rigidly in position to cause the shaft of the crowngear 21 to project at any desired angle, and

said shafthaving the crank 26 applied to it may be rotated to rotate the shaft 16 in whatever position is most convenient.

It is necessary that the cutter should be adapted to accommodate itself to the seat on which it is to operate, which is oblique to the shaft by which the cutter is rotated, and it is the purpose of rotating the cutter.

27 conaxial with the shaft-bearing and thereby encompassing said bearing in annular form.

The cutter-shaft 13, which terminates within the annular boss, is provided at the end withteeth 30, inter-meshing with corresponding teeth 31 on the spindle of the cutter 32, and

the cutter has around said spindle a concave annular seat by which it lodges and makes a universal or ball-and-soeket joint with the an nular boss 26 around the bearing of the'euttershaft. By this means the cutter is adapt ed to assume any angle to the shaft which' is necessary in order that it may correctly work upon the valve-seat to be dressed, and at all angles within the range of accommodation necessary it is driven by the engagement of its spindle with the pivoted end of the shaft.

In order to hold the cutter safely inconnection with the shaft while introducing and withdrawing the machine from the valveya bolt 33 is set through the center of the cutter, which is apertured for that purpose, and

screws into the end of the shaft within the circle of the teeth which engage the cutterspindle, the aperture in the cutter forsaid bolt being sufliciently enlarged to-accommodate the cutter in its necessary change of po sition and the bolt having a head sufficiently extended to retain the cutter notwithstanding the enlargement of the aperture.

I claim 1. A gate-valve-reseatingmachine,comprising a frame adapted at one end to be inserted into-the gateway of the valve-body; a shaft journaled transversely in such inserted end of the frame; means mounted on the frame at the outer end thereof for driving such shaft, the frame having an annular spherical boss protruding from one side of the frame concentric about the axis of the shaft-bearing; a cutter-head having a central socket. adapted to seat on said boss, the shaft having projections engaging recesses in the cutter-head for driving the latter, adapted to remain engaged throughout the entire range of oscillation of the cutter-head about the spherical boss on which it is seated.

' 2. A gate-valve-reseating machine comprising a-frame adapted at one end tobe inserted into the gateway of the valve-body and to protrude therefrom; a shaft journaled transversely in such inserted end of the frame, and means mounted on the frame at the outer end thereof for driving such shaft; the frame having a spherical seat whose center is in the axis of the transverse shaft, a cutter-head seated on said spherical seat whereby such cutterhead is adapted to oscillate about the center of such seat and to be held to its work directly by the pressure of the frame, and

loose driving connections between the shaft and the cutter-head adapted to permit such oscillation.

3. A gate-valve-reseating machine comprising a frame adapted at one end to be inserted into the gateway of a valve body; a shaft journaled transversely in said inserted end of theframe; a shaft extending longitudinally of the frame and. journaled therein and gear connections at the inner end by which it drives the transverse shaft, the frame having exteriorly a spherical seat whose center is in the-axis of the transverse shaft; acutter-head seated on said seat, whereby such cutter-head is adapted to oscillate about the center of such seat and to beheld to its work directly by the pressure of the frame, and loose driving connections between the shaft and the cutterhead adapted to permit such oscillation;

1. A' valve-reseating machine comprising-a frame adapted at one end to be inserted into the gateway of a valve-body; a shaft jour' naled transversely in such inserted end of the frame, and means mounted on the frame for driving suchshaft from theouter end of the frame, the frame having an annular boss protruding from one side, concentric about the axis of the transverse shaft; a cutter-head having a central socket adapted to seat on such'boss and loose driving connections between the transverse shaft and the cutterhead engaging within the annular boss. 1

5 A valve-reseating machine comprising a frame adapted to enter the gateway of avalvebody; a shaft journaled transversely in such inserted end of the frame; a beveled gear on such shaft; a driving-shaft journaled at right angles thereto in the portion of the frame exterior to the valve-body and a beveled pinion thereon meshing with the beveled gear on the first-mentioned shaft; means for rotating the driving-shaft at the outer end of the frame, the frame having an annular boss protruding from one side concentric about the axis of the transverse shaft; a cutter-head having a central socket adapted to seat on said boss, and driving connections between the transverse shaft and the cutter-head engaging within the annular boss.

6. In a gate-valve-reseating machine, in com bination with a frame adapted to be intruded into the valve-body; the cutter-head and the shaft by which it is rotated; means for rotating the shaft from the exterior end of the frame; a spherical seat on the frame concentric with the cutter-head shaft, the cutter-head being centrally mounted on such seat with a range of oscillation in all directions; loose driving engagements between the shaft and the cutter-head, the latter having a central aperture within the circle of the driving engagements and a retaining bolt passing through said aperture and secured in the shaft, and provided at its outer end with proper shoulder for retaining the cutter-head.

7. A gate-valve-reseating machine comprising a frame adapted at one end to be inserted into the gateway of the valve-body; a shaft journaled transversely at such inserted end of the frame; a cutter-head operatively connected with the shaft with freedom for oscillating in all directions about a point in the axis of theshaft whereby the cutter-head is adapted to accommodate itself to the seat; means for rotating said shaft to operate the cutter-head; means adapted to be secured to the valve-body for pivotally supporting the frame to swing toward and from the valve-seat at the inner end; a link and means for pivoting it at one end to said supporting means parallel to the frame-pivot and for pivoting it at the other end to the frame at a distance above the pivot of the latter, and means for lengthening and shortening the link at will to swing the frame about its pivot to carry the cutter-head toward and from the valve-seat.

8. A gate-valve-reseating machine comprising a frame adapted at one end to be inserted into the gateway of the valve-body, and having at that end a cutter-head and means for operating it in combination with a sleeve and means for pivotally mounting the same on the valve body, the frame being adjustable through the sleeve, and means for securing it in adjustable position; an extensible link and means pivotally connecting it with the valvebody and with the frame above. the pivotal connection of the latter.

9. A gate-valve-reseating machine comprising a frame adapted at one end to be inserted into the gateway of the valve-body, and carrying at that end a cutter-head for operating on the valve-seat and means for actuating it; means for securing such frame in relation to the valve-body, consisting of parallel bars adapted to span the gateway into the valvebody; a collar pivotally mounted between them and slotted clamps lodged across the parallel bars, and bolts passing through said slotted clamps into the bolt-apertures of the valve-body, the frame being. inserted through such sleeve and adjustably secured thereto, and means for tilting the frame over the pivot of the sleeve and securing it as tilted.

10. A gate-valve-reseating machine comprising a frame adapted at one end to be inserted into the gateway of the valve-body, and

carrying at that end a cutter-head for operating on the valve-seat and means for actuating it; means for securing such frame in relation to the valve-body, consisting of parallel bars adapted to span the gateway into the valvebody; a collar pivotally mounted between them and slotted clamps lodged across the parallel bars, and bolts passing through said slotted clamps into the bolt-apertures of the valvebody, the frame being inserted through such sleeve and adjustably secured thereto; a collar adjustably secured on the frame above said sleeve and an extensible link pivotally connected at one end with one of the clamps and at the other end with the collar.

' 11. A gate-valve-reseating machine comprising a frame adapted at one end to be inserted into the gateway of the valve-body, and carrying at that end a cutter-head for operating on the valve-seat and means for actuating it; means for securing such frame in relation to the valve-body consisting of parallel bars adapted to span the gateway into the valvebody; a collar pivotally mounted between them and slotted clamps lodged across the parallel bars, and bolts passing through said slotted clamps into the bolt-apertures of the valve-body, the frame being inserted through such sleeve and adjustably secured thereto; a collar adjustably secured on the-frame above said sleeve; an adjustable link comprisingtwo terminal lportions pivotally connected, respec' tively, to the collar and to one of the clamps, 1

and an intermediate sleeve having right and left thread connections with the two terminal portions, respectively.

In testimony whereof I have hereunto set my hand, in the presence of two witnesses, at

Chicago, Illinois, this 31st day of March, A. Dr

FRANK L. SMITH.

In presence of- CHAS. S. BURTON, FRED. G. FISCHER. 

